   in [[light-groups]], or `nil` if the cue should affect all lights."
   [group x y color]
   (let [[effect-key fixtures end-keys effect-name] (build-group-cue-elements group "dimmers" "dimmers")]
-    (ct/set-cue! (:cue-grid *show*) x y
-                 (cues/cue effect-key
-                           (fn [var-map] (dimmer-effect
-                                          (params/bind-keyword-param (:level var-map 255) Number 255)
-                                          fixtures
-                                          :effect-name effect-name))
-                           :variables [{:key "level" :min 0 :max 255 :start 255 :name "Level"}]
-                           :color color :end-keys end-keys))))
+    (show/set-cue! x y
+                   (cues/cue effect-key
+                             (fn [var-map] (dimmer-effect
+                                            (params/bind-keyword-param (:level var-map 255) Number 255)
+                                            fixtures :effect-name effect-name))
+                             :variables [{:key "level" :min 0 :max 255 :start 255 :name "Level"}]
+                             :color color :end-keys end-keys))))
 
 (defn build-ratio-param
   "Creates a dynamic parameter for setting the beat ratio of one of

  (let [hue-bar (oscillators/build-oscillated-param  ; Spread a rainbow across a bar of music
                 (oscillators/sawtooth :interval :bar) :max 360)
        hue-param (params/build-color-param :s :rainbow-saturation :l 50 :h hue-bar)]
    (ct/set-cue! (:cue-grid *show*) 0 1
                 (cues/cue :all-color (fn [_] (fx/scene "Rainbow with laser" (global-color-effect hue-param)
                                                        (beyond/laser-color-effect server hue-param)))
                           :short-name "Rainbow Bar Fade"
                           :variables [{:key :rainbow-saturation :name "Saturatn" :min 0 :max 100 :start 100
                                        :type :integer}])))
  (ct/set-cue! (:cue-grid *show*) 2 7
               (cues/cue :beyond-cue-1-1 (fn [_] (beyond/cue-effect server 1 1))
                         :short-name "Beyond 1 1"))
  (ct/set-cue! (:cue-grid *show*) 3 7
               (cues/cue :beyond-cue-1-2 (fn [_] (beyond/cue-effect server 1 2))
                         :short-name "Beyond 1 2"))
  (afterglow.controllers/set-cue! (:cue-grid *show*) 6 7
                                  (cues/function-cue :snowball-sound :sound-active (show/fixtures-named "snowball")
                                                     :color :cyan)))

(defonce ^{:doc "A step parameter for controlling example chase cues.
  Change it to experiment with other kinds of timing and fades."}

  oscillator parameters."
  [group x y color]
  (let [[effect-key fixtures end-keys effect-name] (build-group-cue-elements group "dimmers" "saw")]
    (show/set-cue! x y
                   (cues/cue effect-key
                             (fn [var-map] (dimmer-effect
                                            (oscillators/build-oscillated-param
                                             (oscillators/sawtooth :down? (:down var-map)
                                                                   :interval-ratio (build-ratio-param var-map)
                                                                   :phase (:phase var-map)))
                                            fixtures
                                            :effect-name effect-name))
                             :color color
                             :variables [{:key "beats" :min 1 :max 32 :type :integer :start 2 :name "Beats"}
                                         {:key "down" :type :boolean :start true :name "Down?"}
                                         {:key "cycles" :min 1 :max 10 :type :integer :start 1 :name "Cycles"}
                                         {:key "phase" :min 0 :max 1 :start 0 :name "Phase"}]
                             :end-keys end-keys))))

(defn make-triangle-dimmer-cue
  "Create a cue which applies a triangle oscillator to the dimmers of
